<template>
  <div>
    <!-- 面包屑导航区域 breadcrumb ブレッドクラム separator セパレーター 分隔器-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片试图 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRoledDialogVisible = true"
            >添加角色</el-button
          >
        </el-col>
      </el-row>

      <!-- 角色列表区域 -->
      <el-table :data="roleList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['dbbottom', i1 === 0 ? 'dbtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row, item1.id)">
                  {{ item1.authName }}
                </el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二,三级权限 -->
              <el-col :span="19">
                <el-row
                  :class="[i2 === 0 ? '' : 'dbtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <!-- 渲染二级权限 -->
                  <el-col :span="6">
                    <el-tag
                      closable
                      type="success"
                      @close="removeRightById(scope.row, item2.id)"
                    >
                      {{ item2.authName }}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <!-- 渲染三级权限 -->
                  <el-col :span="18">
                    <el-tag
                      closable
                      type="warning"
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      @close="removeRightById(scope.row, item3.id)"
                    >
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>
                {{ scope.row }}
            </pre> -->
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index" label="No"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
              @click="showEditRoleDialog(scope.row.id)"
            >
              编辑
            </el-button>
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="removeRoleById(scope.row.id)"
            >
              删除
            </el-button>
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
            >
              分配权限
            </el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 角色列表添加角色按钮 -->
    <el-dialog
      title="添加角色"
      :visible.sync="addRoledDialogVisible"
      width="50%"
      :before-close="handleClose"
      @close="addDialogClosed"
    >
      <el-form
        :model="addRole"
        :rules="addRoleRules"
        ref="addRoleRef"
        label-width="100px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addRole.roleName" clearable></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addRole.roleDesc" clearable></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addRoledDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 角色列表的编辑按钮 -->
    <el-dialog
      title="编辑角色"
      :visible.sync="editRoledDialogVisible"
      width="50%"
      :before-close="handleClose"
      @close="editDialogClosed"
    >
      <el-form
        :model="editRole"
        :rules="editRoleRules"
        ref="editRoleRef"
        label-width="100px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editRole.roleName" clearable></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editRole.roleDesc" clearable></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editRoledDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配权限的对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <!-- 树形控件 -->
      <el-tree
        :data="rightsList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defaultKeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button 
          type="primary" 
          @click="allotRights"
        >
          确 定
        </el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
      // 使用角色列表定义
      roleList: [],
      // 所有权限的数据
      rightsList: [],
      //   树形控件的属性绑定对象
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      //   默认勾选的节点id的数组
      defaultKeys: [],
      addRoledDialogVisible: false,
      editRoledDialogVisible: false,
      setRightDialogVisible: false,
      addRole: [],
      editRole: [],
      roleId:'',
      //  添加角色的表单验证规则对象
      addRoleRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' },
          { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
        ],
        roleDesc: [
          { required: true, message: '请输入角色描述', trigger: 'blur' },
          { min: 2, max: 30, message: '长度在 2 到 30 个字符', trigger: 'blur' }
        ]
      },
      //  编辑角色的表单验证规则对象
      editRoleRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' },
          { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
        ],
        roleDesc: [
          { required: true, message: '请输入角色描述', trigger: 'blur' },
          { min: 2, max: 30, message: '长度在 2 到 30 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  created() {
    this.getrolesList()
  },
  methods: {
    async getrolesList() {
      const { data: res } = await this.$http.get('roles')

      if (res.meta.status !== 200) {
        return this.$message.error('请求角色列表失败')
      }
      this.roleList = res.data

      console.log('1111111111111')
      console.log(this.roleList)
    },
    handleClose(done) {
      this.$confirm('确认关闭？')
        .then(_ => {
          done()
        })
        .catch(_ => {})
    },
    // 添加角色对话框重置
    addDialogClosed() {
      this.$refs.addRoleRef.resetFields()
    },
    // 编辑角色对话框重置
    editDialogClosed() {
      this.$refs.editRoleRef.resetFields()
    },
    // 添加角色确定按钮
    addRoleInfo() {
      this.$http.post('roles', this.addRole)
      this.addRoledDialogVisible = false
    },
    //打开添加角色地编辑对话框
    showEditRoleDialog() {
      this.editRoledDialogVisible = true
    },
    //添加角色确定按钮
    editRoleInfo() {
      this.editRoledDialogVisible = false
    },
    //添加角色删除按钮
    removeRoleById() {
      this.$confirm('此操作将永久删除该用户角色, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
    },
    // 根据ID删除对应的权限
    async removeRightById(role, rightId) {
      const confirmResuilt = await this.$confirm(
        '此操作将永久删除该文件, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      if (confirmResuilt !== 'confirm') {
        return this.$message.info('取消了删除')
      }
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      )

      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败')
      }
      // 刷新列表
      //    this.getrolesList(); //不建议使用这个方法.

      role.children = res.data
    },
    // 显示分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      // 获取所有权限的数据
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败')
      }
      //保存获取到的权限数据
      this.rightsList = res.data
    //   console.log('33333333333')
    //   console.log(this.rightsList)
    // 递归获取三级节点的id
    this.getLeafKeys(role,this.defaultKeys)
      // 打开分配权限的对话框
      this.setRightDialogVisible = true
    },
    // 通过递归的形式，获取角色下使用三级权限的id，并保存到defaultKeys数组中
    getLeafKeys(node,arr){
        if(!node.children){
            return arr.push(node.id)
        }
        node.children.forEach(item => this.getLeafKeys(item,arr));
    },
    // 监听分配权限的对话框关闭
    setRightDialogClosed(){
        this.defaultKeys = [];
    },
    // 点击分配权限的确定按钮
    async allotRights(){
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idstr = keys.join(',')
      const {data : res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids : idstr})

      if(res.meta.status !== 200){
        return this.$message.error("分配权限失败")
      }
      this.$message.success("分配权限成功")
      this.getrolesList();
      this.setRightDialogVisible = false
      console.log(keys)
    }
  }
}
</script>
<style lang="less" scoped>
.el-tag {
  margin: 10px;
}
.dbtop {
  border: 1px solid #eee;
}
.dbbottom {
  border: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
